Phosphoric acid, bis(1,1-dimethylethyl) ester, potassium salt (1:1)

Appearance / physical state / colour

Administrative data

Endpoint:

appearance / physical state / colour

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2012-07-23 - 2013-01-10

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Remarks:

Also conducted according to GLP.

Cross-reference

Reason / purpose for cross-reference:

reference to same study

Reference

Endpoint:

relative self-ignition temperature (solids)

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2012-07-23 - 2013-01-10

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Remarks:

Study conducted in compliance with international standard guidelines under GLP conditions. The study report was well documented with all mandatory information included.

Reason / purpose for cross-reference:

reference to same study

Qualifier:

according to guideline

Guideline:

EU Method A.16 (Relative Self-Ignition Temperature for Solids)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Remarks:

2012-09-07

Remarks on result:

no self-ignition observed up to the melting point

Remarks:

The test item melts at 219-239°C. No relevant exothermic reaction/self-heating of the sample was observed up to that temperature.

The test item was a white crystalline solid. Whilst heating the test item, no relevant exothermic reaction/self-heating of the sample had been observed. On completion of the test, the cube contained a hard fused white solid.

The melting temperature of the test item is stated as 219 to 239°C. This was observed in the differences between the sample and reference curve at approximately 200°C. As the oven temperature was increased to 250°C, the test item was heated to above its melting point.

Conclusions:

No relevant exothermic reaction/self-heating of the sample was observed

Executive summary:

The determination of self ignition temperature was performed according to Method A.15 of Commission Regulation (EC)N°440/2008 of 30 May 2008 and GLP. No deviation of the guidelines was observed during the test.

The test item is heated in a fine mesh stainless steel cube that is suspended in an oven. The temperature/time-curves of both test item and oven are recorded.The self-ignition temperature, as obtained by this method, is the minimum ambient temperature expressed in (°C) at which a certain volume of a substance ignites under defined conditions.The temperature of the oven at which the sample reaches 400°C by self-heating is stated as the self-iginition temperature of the test item.

The test item has been determined not to have a relative self-ignition temperature below its melting temperature. The test item melted at 219-239°C.

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2013

Report date:

2013

Materials and methods

Test guideline

Qualifier:

no guideline required

GLP compliance:

yes (incl. QA statement)

Remarks:

2012-11-30

Test material

Test material information

Constituent 1

Reference substance name:

Potassium di-tert-butyl phosphate

EC Number:

619-702-9

Cas Number:

33494-80-3

Molecular formula:

C8H18KO4P

IUPAC Name:

Potassium di-tert-butyl phosphate

Test material form:

solid: crystalline

Details on test material:

See Confidentail details on test material section

Results and discussion

Physical state at 20°C and 1013 hPa:

solid

Form / colour / odour

Form:

solid: crystalline

Colour:

White

Substance type:

organic

Applicant's summary and conclusion

Conclusions:

The substance is a white crystalline solid.

Executive summary:

The substance is a white crystalline solid.